exit /b does not work properly in subroutines

  • Thread starter Thread starter Martin Rakhmanov
  • Start date Start date
M

Martin Rakhmanov

Hello

According to MSFT documentation (help exit) I expect "exit /b 1" called
within a batch to exit current batch and set ERRORLEVEL to 1. But this does
not work when I call exit /b in a subroutine - see attached batch. Why? I
am running Windows Server 2003 SP1.

Martin
 
Martin said:
Hello

According to MSFT documentation (help exit) I expect "exit /b 1" called
within a batch to exit current batch and set ERRORLEVEL to 1. But this does
not work when I call exit /b in a subroutine - see attached batch. Why? I
am running Windows Server 2003 SP1.

Martin
Click to expand...

How about this version?

- - - - - - - begin screen capture WinXP MCE 2005 SP2 - - - - - - -
=====begin c:\cmd\demo\sample.cmd ====================
01. @echo off
02. setlocal
03. set exit=goto :EOF
04. call :MyLabel %1
05. %exit%
06. echo This line should never be reached
07.
08. goto :EOF
09.
10. :MyLabel
11.
12. if NOT "%~1"=="unknownoption" (
13. echo Hello from subprogram
14. set exit=exit /b 1
15. goto :EOF
16. )
=====end c:\cmd\demo\sample.cmd ====================
- - - - - - - end screen capture WinXP MCE 2005 SP2 - - - - - - -
 
Phil

Thanks for input but this is not what I need: I should be able to quit
entire batch from within subprogram conditionally.
Also I do not understand why simple documented by Microsoft function ("exit
/b") does not work as expected.

Martin
 
It is doing what is expected. It is exiting the second bat file started with call. You are running a batchfile twice.

add this line

echo %errorlevel%
echo This line should never be reached

See Call's help.
--
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How to lose a war in Iraq
http://webdiary.com.au/cms/?q=node/1335#comment-48641
=================================================
Martin Rakhmanov said:
Phil

Thanks for input but this is not what I need: I should be able to quit
entire batch from within subprogram conditionally.
Also I do not understand why simple documented by Microsoft function ("exit
/b") does not work as expected.

Martin
Click to expand...
 
Yes, you are right. How do I then exit entire batch from subprogram and set
errorlevel?


"David Candy" <.> wrote in message
It is doing what is expected. It is exiting the second bat file started with
call. You are running a batchfile twice.

add this line

echo %errorlevel%
echo This line should never be reached

See Call's help.
--
--------------------------------------------------------------------------------------------------
How to lose a war in Iraq
http://webdiary.com.au/cms/?q=node/1335#comment-48641
=================================================
Martin Rakhmanov said:
Phil

Thanks for input but this is not what I need: I should be able to quit
entire batch from within subprogram conditionally.
Also I do not understand why simple documented by Microsoft function
("exit
/b") does not work as expected.

Martin
Click to expand...
 
Also why exit without /b switch exits entire batch, i.e. does exactly what I
need (but does not set errorlevel)?

Martin Rakhmanov said:
Yes, you are right. How do I then exit entire batch from subprogram and
set errorlevel?


"David Candy" <.> wrote in message
It is doing what is expected. It is exiting the second bat file started
with call. You are running a batchfile twice.

add this line

echo %errorlevel%
echo This line should never be reached

See Call's help.
Click to expand...
 
That's how programs tend to work. Return your error to main program, test it there and decide what to do.

--
--------------------------------------------------------------------------------------------------
How to lose a war in Iraq
http://webdiary.com.au/cms/?q=node/1335#comment-48641
=================================================
Martin Rakhmanov said:
Yes, you are right. How do I then exit entire batch from subprogram and set
errorlevel?


"David Candy" <.> wrote in message
It is doing what is expected. It is exiting the second bat file started with
call. You are running a batchfile twice.

add this line

echo %errorlevel%
echo This line should never be reached

See Call's help.
Click to expand...
 
It doesn't. It either exits a shelled batch or cmd.exe, just like all dos batch files expect..
 
Please have a look at two batch files: they only differ in one line (exit
and exit /b 1 respectively). So why the batches behave differently?


"David Candy" <.> wrote in message
It doesn't. It either exits a shelled batch or cmd.exe, just like all dos
batch files expect..
 
I see - /b switch is required to exit batch. Otherwise cmd.exe session is
closed. I have no more questions, thanks for help, David - it is excellent!

Martin
 
Thank you, you are so polite.

"David Candy" <.> wrote in message
Why do you keep repeating yourself. Are you a total idiot. I just told you.
 
Martin Rakhmanov said:
Phil

Thanks for input but this is not what I need: I should be able to quit
entire batch from within subprogram conditionally.
Also I do not understand why simple documented by Microsoft function ("exit
/b") does not work as expected.
Click to expand...

I realize that you have resolved your issue here, but it is worth
remembering the following truism: "when confronted with things that do not
work as expected, consider that it may be the expectation that is in error".

/Al
Martin
Click to expand...
 
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